Radio Galaxy Zoo EMU : Towards a Semantic Radio Galaxy Morphology Taxonomy

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Bowles, Micah and Tang, Hongming and Vardoulaki, Eleni and Alexander, Emma L. and Luo, Yan and Rudnick, Lawrence and Walmsley, Mike and Porter, Fiona and Scaife, Anna M. M. and Slijepcevic, Inigo Val and Adams, Elizabeth A. K. and Drabent, Alexander and Dugdale, Thomas and Gürkan, Gülay and Hopkins, Andrew M. and Jimenez-Andrade, Eric F. and Leahy, Denis A. and Norris, Ray P. and Rahman, Syed Faisal ur and Ouyang, Xichang and Segal, Gary and Shabala, Stanislav S. and Wong, O. Ivy (2023) Radio Galaxy Zoo EMU : Towards a Semantic Radio Galaxy Morphology Taxonomy. Monthly Notices of the Royal Astronomical Society, 522 (2). pp. 2584-2600. ISSN 0035-8711 (https://doi.org/10.1093/mnras/stad1021)

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Abstract

We present a novel natural language processing (NLP) approach to deriving plain English descriptors for science cases otherwise restricted by obfuscating technical terminology. We address the limitations of common radio galaxy morphology classifications by applying this approach. We experimentally derive a set of semantic tags for the Radio Galaxy Zoo EMU (Evolutionary Map of the Universe) project and the wider astronomical community. We collect 8,486 plain English annotations of radio galaxy morphology, from which we derive a taxonomy of tags. The tags are plain English. The result is an extensible framework which is more flexible, more easily communicated, and more sensitive to rare feature combinations which are indescribable using the current framework of radio astronomy classifications.

ORCID iDs

Bowles, Micah, Tang, Hongming, Vardoulaki, Eleni, Alexander, Emma L., Luo, Yan, Rudnick, Lawrence, Walmsley, Mike, Porter, Fiona ORCID logoORCID: https://orcid.org/0000-0002-5695-0633, Scaife, Anna M. M., Slijepcevic, Inigo Val, Adams, Elizabeth A. K., Drabent, Alexander, Dugdale, Thomas, Gürkan, Gülay, Hopkins, Andrew M., Jimenez-Andrade, Eric F., Leahy, Denis A., Norris, Ray P., Rahman, Syed Faisal ur, Ouyang, Xichang, Segal, Gary, Shabala, Stanislav S. and Wong, O. Ivy;
CORE (COnnecting REpositories)